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Question 1Gynecologic anatomy, physiology, and histology

The uterus is normally described as being in which position?

  1. Retroverted and anteflexed
  2. Anteverted and retroflexed
  3. Retroverted and retroflexed
  4. Anteverted and anteflexed Correct answer.

Explanation

In most women the uterine fundus is tipped forward over the bladder (anteverted) and the body is bent forward on the cervix (anteflexed). This orientation results from the balance of pelvic floor support and ligamentous attachments.

Question 2Gynecologic anatomy, physiology, and histology

Which structure lies immediately anterior to the vagina and posterior to the pubic symphysis?

  1. Urethra Correct answer.
  2. Cervix
  3. Bladder
  4. Rectum

Explanation

The urethra runs from the bladder neck to the external urethral meatus, embedded in the anterior vaginal wall. It is the structure directly anterior to the vagina in the retropubic space.

Question 3Gynecologic anatomy, physiology, and histology

The ovarian artery arises directly from which vessel?

  1. Internal iliac artery
  2. External iliac artery
  3. Abdominal aorta Correct answer.
  4. Uterine artery

Explanation

The ovarian artery is a paired gonadal branch of the abdominal aorta, arising just below the renal arteries. It descends in the infundibulopelvic ligament to supply the ovary and part of the tube.

Question 4Gynecologic anatomy, physiology, and histology

Which hormone is primarily responsible for the midcycle surge that triggers ovulation?

  1. Luteinizing hormone Correct answer.
  2. Follicle-stimulating hormone
  3. Estradiol
  4. Progesterone

Explanation

A sharp rise in luteinizing hormone (LH) from the anterior pituitary, triggered by peak estradiol from the dominant follicle, induces ovulation about 24–36 hours later. Progesterone rises after ovulation, and FSH supports follicular growth earlier in the cycle.

Question 5Gynecologic anatomy, physiology, and histology

The normal squamous-columnar junction of the cervix is located at which site?

  1. Endocervical canal
  2. External os Correct answer.
  3. Ectocervix
  4. Isthmus

Explanation

The squamous-columnar junction (SCJ) is the line where the ectocervical squamous epithelium meets the endocervical columnar epithelium. In reproductive-age women it is typically located at or near the external os.

Question 6Gynecologic anatomy, physiology, and histology

The round ligament of the uterus is a remnant of which embryonic structure?

  1. Wolffian duct
  2. Müllerian duct
  3. Processus vaginalis
  4. Gubernaculum Correct answer.

Explanation

The round ligament develops from the gubernaculum, which in the female extends from the ovary to the labium majus. Its upper portion becomes the ovarian ligament and its lower portion the round ligament.

Question 7Gynecologic anatomy, physiology, and histology

Which layer of the uterus is shed during menstruation?

  1. Perimetrium
  2. Stratum basalis
  3. Myometrium
  4. Stratum functionalis Correct answer.

Explanation

The endometrium consists of a superficial functionalis layer and a deep basalis layer. The functionalis is shed during menstruation and regenerates from the basalis each cycle.

Question 8Gynecologic anatomy, physiology, and histology

The primary blood supply to the ovary is derived from which artery?

  1. Superior vesical artery
  2. Internal pudendal artery
  3. Uterine artery
  4. Ovarian artery Correct answer.

Explanation

The ovarian artery, a direct branch of the abdominal aorta, provides the main arterial supply to the ovary. The uterine artery contributes a smaller collateral supply through the ovarian branch.

Question 9Gynecologic anatomy, physiology, and histology

During the follicular phase of the menstrual cycle, which hormone exerts negative feedback on the pituitary before the midcycle surge?

  1. Oxytocin
  2. Prolactin
  3. Progesterone
  4. Estradiol Correct answer.

Explanation

In the early to mid-follicular phase, rising estradiol from developing follicles suppresses FSH and LH release. Near midcycle, estradiol switches to positive feedback and provokes the LH surge.

Question 10Gynecologic anatomy, physiology, and histology

A 28-year-old woman has a normal uterus but is missing the upper vagina and cervix. Which embryologic structure most likely failed to develop?

  1. Mesonephric ducts
  2. Paramesonephric ducts Correct answer.
  3. Genital tubercle
  4. Urogenital sinus

Explanation

The paramesonephric (Müllerian) ducts fuse to form the uterus, cervix, and upper vagina. Failure of their development results in Müllerian agenesis (Mayer-Rokitansky-Küster-Hauser syndrome), with a normal uterus absent only when fusion fails completely.

Question 11Gynecologic anatomy, physiology, and histology

Which pelvic ligament contains the uterine vessels and provides major lateral support to the cervix?

  1. Cardinal ligament Correct answer.
  2. Ovarian ligament
  3. Suspensory ligament of the ovary
  4. Round ligament

Explanation

The cardinal (transverse cervical) ligaments extend from the cervix to the lateral pelvic wall and carry the uterine artery and veins. They are a principal support of the uterus and cervix.

Question 12Gynecologic anatomy, physiology, and histology

The cervix is predominantly composed of which tissue?

  1. Smooth muscle
  2. Elastic cartilage
  3. Fibrous connective tissue Correct answer.
  4. Adipose tissue

Explanation

The cervical stroma is mainly dense fibrous connective tissue with only about 10–15% smooth muscle. This composition gives the cervix its firm consistency and resistance to dilation until labor.

Question 13Gynecologic anatomy, physiology, and histology

Which hormone is responsible for the postovulatory rise in basal body temperature?

  1. LH
  2. Progesterone Correct answer.
  3. Estradiol
  4. FSH

Explanation

Progesterone from the corpus luteum raises the hypothalamic set point, producing a sustained increase in basal body temperature of about 0.3–0.5 °C after ovulation. Estradiol does not cause this thermogenic shift.

Question 14Gynecologic anatomy, physiology, and histology

The vaginal epithelium in a reproductive-age woman is best described as which type?

  1. Transitional
  2. Simple columnar
  3. Stratified squamous, keratinized
  4. Stratified squamous, nonkeratinized Correct answer.

Explanation

The vagina is lined by nonkeratinized stratified squamous epithelium that undergoes glycogen accumulation under estrogen influence. This glycogen supports lactobacilli and the acidic vaginal pH.

Question 15Gynecologic anatomy, physiology, and histology

Which structure separates the superficial and deep perineal pouches?

  1. Colles fascia
  2. Perineal membrane Correct answer.
  3. Urogenital diaphragm
  4. Levator ani

Explanation

The perineal membrane (inferior fascia of the urogenital diaphragm) separates the superficial perineal pouch from the deep perineal pouch. It is a triangular fibrous sheet spanning the pubic arch.

Question 16Gynecologic anatomy, physiology, and histology

The dominant follicle is selected during which phase of the menstrual cycle?

  1. Follicular phase Correct answer.
  2. Menstrual phase
  3. Secretory phase
  4. Luteal phase

Explanation

Follicular recruitment and selection of the dominant follicle occur during the follicular phase under FSH stimulation. The luteal (secretory) phase follows ovulation and is dominated by progesterone.

Question 17Gynecologic anatomy, physiology, and histology

Which of the following is the primary source of estrogen after menopause?

  1. Adipose tissue aromatization Correct answer.
  2. Corpus luteum
  3. Ovarian granulosa cells
  4. Adrenal cortex directly

Explanation

After menopause, ovarian estrogen production falls, and circulating estradiol is derived mainly from peripheral conversion of adrenal and ovarian androgens to estrone in adipose tissue. The aromatase enzyme in fat mediates this conversion.

Question 18Gynecologic anatomy, physiology, and histology

A 24-year-old woman has primary amenorrhea, normal breast development, and a blind vaginal pouch. Karyotype is 46,XX. Which structure is most likely absent?

  1. Ovaries
  2. Uterus Correct answer.
  3. Adrenal glands
  4. Pituitary gland

Explanation

Normal breast development and 46,XX karyotype with a blind vagina point to Müllerian agenesis, in which the uterus and upper vagina fail to form. Ovaries are present and functional, producing estrogen that drives breast development.

Question 19Gynecologic anatomy, physiology, and histology

The blood supply to the cervix is primarily from which artery?

  1. Inferior epigastric artery
  2. Ovarian artery
  3. Uterine artery Correct answer.
  4. Internal pudendal artery

Explanation

The uterine artery, a branch of the internal iliac artery, descends in the cardinal ligament and gives off the vaginal and cervical branches. It is the principal arterial supply to the cervix and uterus.

Question 20Gynecologic anatomy, physiology, and histology

Which hormone is highest during the mid-luteal phase of the menstrual cycle?

  1. FSH
  2. Progesterone Correct answer.
  3. LH
  4. Estradiol

Explanation

The corpus luteum secretes large amounts of progesterone during the mid-luteal phase, peaking about 7 days after ovulation. Estradiol also rises but progesterone dominates the luteal phase.

Question 21Gynecologic anatomy, physiology, and histology

A 32-year-old woman has a 3-cm simple ovarian cyst. Which artery provides the primary blood supply to the affected ovary?

  1. Uterine artery
  2. Superior rectal artery
  3. Ovarian artery Correct answer.
  4. Internal pudendal artery

Explanation

The ovarian artery, arising from the abdominal aorta, is the main arterial supply to the ovary. The uterine artery provides only a minor collateral contribution via the ovarian branch.

Question 22Gynecologic anatomy, physiology, and histology

Which pelvic floor muscle is most important for maintaining urinary continence?

  1. Piriformis
  2. Coccygeus
  3. Levator ani Correct answer.
  4. Obturator internus

Explanation

The levator ani, particularly its pubococcygeus and puborectalis portions, provides the main support to the pelvic viscera and contributes to urethral closure. Its tone is essential for urinary continence.

Question 23Gynecologic anatomy, physiology, and histology

During a hysterectomy, ligation of the uterine artery is performed near the cervix. Which structure is most at risk if the ligature slips medially?

  1. Ovarian artery
  2. External iliac vein
  3. Ureter Correct answer.
  4. Sciatic nerve

Explanation

The ureter passes under the uterine artery about 1–2 cm lateral to the cervix, creating the classic 'water under the bridge' relationship. Medial slippage of a ligature places the ureter at risk of injury or obstruction.

Question 24Gynecologic anatomy, physiology, and histology

The vaginal pH in a healthy reproductive-age woman is maintained at approximately which value?

  1. 5.0–5.5
  2. 7.0–7.5
  3. 3.8–4.5 Correct answer.
  4. 6.0–6.5

Explanation

Lactobacilli metabolize glycogen from the vaginal epithelium to lactic acid, maintaining an acidic pH of about 3.8–4.5. This acidity protects against pathogens.

Question 25Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following is the most significant established risk factor for the development of epithelial ovarian cancer?

  1. Nulliparity Correct answer.
  2. Early menarche
  3. Tubal ligation
  4. Oral contraceptive use

Explanation

Nulliparity is associated with an increased risk of epithelial ovarian cancer, likely due to uninterrupted ovulation and repeated trauma to the ovarian surface epithelium. Each pregnancy and breastfeeding episode reduces the number of ovulatory cycles and lowers risk.

Question 26Epidemiology, etiology, and risk factors of gynecologic malignancies

Infection with which virus is the principal etiologic agent for cervical cancer?

  1. Human papillomavirus Correct answer.
  2. Herpes simplex virus type 2
  3. Epstein-Barr virus
  4. Human immunodeficiency virus

Explanation

Persistent infection with high-risk types of human papillomavirus (HPV), particularly types 16 and 18, is necessary for the development of cervical cancer. HPV DNA is found in nearly all cervical cancers.

Question 27Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following is the strongest established risk factor for endometrial cancer?

  1. Obesity Correct answer.
  2. Combined oral contraceptive use
  3. Multiparity
  4. Tobacco smoking

Explanation

Obesity is a major risk factor for endometrial cancer because excess adipose tissue increases peripheral conversion of androgens to estrogens, leading to unopposed estrogen exposure. The risk increases with increasing body mass index.

Question 28Epidemiology, etiology, and risk factors of gynecologic malignancies

A 62-year-old woman presents with postmenopausal bleeding and is diagnosed with endometrial cancer. Which of the following conditions is most strongly associated with an increased risk of this cancer?

  1. Polycystic ovary syndrome Correct answer.
  2. Cirrhosis
  3. Diabetes mellitus
  4. Hypertension

Explanation

Polycystic ovary syndrome is characterized by chronic anovulation and unopposed estrogen exposure, which significantly increases the risk of endometrial hyperplasia and carcinoma. While obesity, diabetes, and hypertension are also risk factors, PCOS confers a particularly high risk due to hormonal imbalance.

Question 29Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following is the most common histological subtype of ovarian cancer?

  1. Mucinous carcinoma
  2. Clear cell carcinoma
  3. Endometrioid carcinoma
  4. Serous carcinoma Correct answer.

Explanation

Serous carcinoma, particularly high-grade serous carcinoma, is the most common histological type of epithelial ovarian cancer, accounting for approximately 70% of cases. It often presents at an advanced stage.

Question 30Epidemiology, etiology, and risk factors of gynecologic malignancies

A woman with a BRCA1 germline mutation has a significantly increased lifetime risk of which cancer?

  1. Vulvar cancer
  2. Ovarian cancer Correct answer.
  3. Cervical cancer
  4. Endometrial cancer

Explanation

BRCA1 and BRCA2 mutations confer a high lifetime risk of ovarian cancer, particularly high-grade serous carcinoma, as well as breast cancer. Risk-reducing salpingo-oophorectomy is often recommended after childbearing.

Question 31Epidemiology, etiology, and risk factors of gynecologic malignancies

Lynch syndrome is associated with an increased risk of which gynecologic malignancy?

  1. Endometrial cancer Correct answer.
  2. Ovarian cancer
  3. Vaginal cancer
  4. Cervical cancer

Explanation

Lynch syndrome, caused by germline mutations in DNA mismatch repair genes, markedly increases the risk of colorectal and endometrial cancers. Endometrial cancer is often the sentinel cancer in women with Lynch syndrome.

Question 32Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following factors is protective against ovarian cancer?

  1. Late menopause
  2. Early menarche
  3. Nulliparity
  4. Breastfeeding Correct answer.

Explanation

Breastfeeding is associated with a reduced risk of ovarian cancer, likely because it suppresses ovulation and reduces the number of ovulatory cycles. The protective effect increases with longer duration of breastfeeding.

Question 33Epidemiology, etiology, and risk factors of gynecologic malignancies

A 35-year-old woman has a history of endometriosis. She is at increased risk for which histologic subtype of ovarian cancer?

  1. Germ cell tumors
  2. Mucinous carcinoma
  3. Endometrioid and clear cell carcinoma Correct answer.
  4. High-grade serous carcinoma

Explanation

Endometriosis is associated with an increased risk of endometrioid and clear cell ovarian carcinomas. These subtypes often arise from endometriotic cysts.

Question 34Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following is an established risk factor for vulvar cancer?

  1. Tobacco smoking
  2. Immunosuppression
  3. Human papillomavirus infection
  4. All of the above are established risk factors Correct answer.

Explanation

HPV infection, tobacco smoking, and immunosuppression are all established risk factors for vulvar cancer, particularly HPV-associated squamous cell carcinoma. Smoking and immunosuppression may act as cofactors.

Question 35Epidemiology, etiology, and risk factors of gynecologic malignancies

A 55-year-old woman is diagnosed with endometrial cancer. Which of the following is the most common presenting symptom?

  1. Pelvic pain
  2. Urinary frequency
  3. Abnormal vaginal discharge
  4. Postmenopausal bleeding Correct answer.

Explanation

Postmenopausal bleeding is the most common presenting symptom of endometrial cancer, occurring in about 90% of cases. Any postmenopausal bleeding warrants investigation to rule out endometrial cancer.

Question 36Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following is the most important etiologic factor for cervical cancer?

  1. Persistent infection with high-risk HPV types Correct answer.
  2. Long-term use of oral contraceptives
  3. High parity
  4. Tobacco smoking

Explanation

Persistent infection with oncogenic (high-risk) HPV types is the necessary cause of cervical cancer. Other factors such as smoking, parity, and oral contraceptive use are cofactors that increase the risk but are not sufficient alone.

Question 37Epidemiology, etiology, and risk factors of gynecologic malignancies

A woman with a BRCA2 mutation has an increased risk of which cancer in addition to breast and ovarian cancer?

  1. Pancreatic cancer Correct answer.
  2. Endometrial cancer
  3. Vulvar cancer
  4. Cervical cancer

Explanation

BRCA2 mutations are associated with an increased risk of pancreatic cancer, as well as breast, ovarian, and prostate cancers. BRCA1 mutations also increase pancreatic cancer risk, though the association is stronger for BRCA2.

Question 38Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following is a recognized risk factor for fallopian tube cancer?

  1. Early menopause
  2. Nulliparity
  3. History of pelvic inflammatory disease
  4. BRCA mutation Correct answer.

Explanation

BRCA mutations, particularly BRCA1, are strongly associated with an increased risk of fallopian tube carcinoma, which often arises in the fimbrial end. Many high-grade serous ovarian cancers are now thought to originate in the fallopian tube.

Question 39Epidemiology, etiology, and risk factors of gynecologic malignancies

A 45-year-old woman has a body mass index of 35 kg/m² and type 2 diabetes. She is at increased risk for which type of endometrial cancer?

  1. Serous carcinoma
  2. Clear cell carcinoma
  3. Type I (estrogen-dependent) Correct answer.
  4. Type II (estrogen-independent)

Explanation

Obesity and diabetes are classic risk factors for type I endometrial cancer, which is estrogen-dependent and typically endometrioid in histology. Type II cancers are less associated with estrogen excess and more common in older, thinner women.

Question 40Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following statements about the epidemiology of ovarian cancer is correct?

  1. It is the most common gynecologic malignancy in the United States.
  2. Its incidence has been rising sharply in recent decades.
  3. It is most frequently diagnosed in women under 40.
  4. It has the highest mortality rate among gynecologic cancers. Correct answer.

Explanation

Ovarian cancer has the highest mortality rate of all gynecologic cancers, largely because it is often diagnosed at an advanced stage. Endometrial cancer is the most common gynecologic malignancy.

Question 41Epidemiology, etiology, and risk factors of gynecologic malignancies

A 30-year-old woman has a history of cervical intraepithelial neoplasia (CIN) 3. Which of the following is the most important factor for progression to invasive cervical cancer?

  1. Persistent infection with high-risk HPV types Correct answer.
  2. Use of barrier contraception
  3. Regular cervical screening
  4. Infection with low-risk HPV types

Explanation

Persistent infection with high-risk HPV types is the key driver of progression from CIN to invasive cervical cancer. Without persistence, most HPV infections are cleared by the immune system.

Question 42Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following is the most common site of origin for high-grade serous ovarian carcinoma?

  1. Ovarian surface epithelium
  2. Fallopian tube fimbria Correct answer.
  3. Endometriotic implants
  4. Peritoneal mesothelium

Explanation

Recent evidence indicates that many high-grade serous ovarian carcinomas originate in the fallopian tube fimbria, particularly from serous tubal intraepithelial carcinoma (STIC) lesions. This has led to changes in surgical prevention strategies.

Question 43Epidemiology, etiology, and risk factors of gynecologic malignancies

A 50-year-old woman with a history of breast cancer treated with tamoxifen is at increased risk for which gynecologic malignancy?

  1. Endometrial cancer Correct answer.
  2. Cervical cancer
  3. Vulvar cancer
  4. Ovarian cancer

Explanation

Tamoxifen has estrogen-agonist effects on the endometrium, increasing the risk of endometrial hyperplasia and carcinoma. Women on tamoxifen should be counseled about this risk and monitored for abnormal bleeding.

Question 44Epidemiology, etiology, and risk factors of gynecologic malignancies

Which of the following is the strongest risk factor for the development of vulvar squamous cell carcinoma in older women?

  1. HPV infection
  2. Immunosuppression
  3. Lichen sclerosus Correct answer.
  4. Smoking

Explanation

Lichen sclerosus is a chronic inflammatory skin condition that is strongly associated with an increased risk of vulvar squamous cell carcinoma, particularly in older women. HPV infection is a more important risk factor in younger women.

Question 45Diagnostic evaluation, staging workup, and imaging

A 34-year-old woman has a 3 cm solid ovarian mass with suspicious features on transvaginal ultrasound. Which serum marker is most useful both for initial assessment and for post-treatment monitoring of an epithelial ovarian malignancy?

  1. Alpha-fetoprotein
  2. Inhibin B
  3. Beta-hCG
  4. CA-125 Correct answer.

Explanation

CA-125 is the standard serum tumor marker for epithelial ovarian cancer and is used to support diagnosis and to track response and recurrence. Beta-hCG and AFP belong to germ cell tumors, and inhibin B is used for sex cord-stromal tumors.

Question 46Diagnostic evaluation, staging workup, and imaging

Which imaging modality is the preferred first-line study for characterizing an adnexal mass in a reproductive-age woman?

  1. Whole-body PET-CT
  2. Non-contrast CT of the abdomen
  3. Transvaginal ultrasonography Correct answer.
  4. Plain abdominal radiography

Explanation

Transvaginal ultrasound provides high-resolution assessment of adnexal morphology, vascularity, and cystic/solid components and is the recommended initial modality. CT and PET are reserved for staging or problem-solving, and plain films cannot characterize pelvic soft tissue.

Question 47Diagnostic evaluation, staging workup, and imaging

Which finding on pelvic ultrasound most suggests a mature cystic teratoma (dermoid cyst)?

  1. A simple thin-walled anechoic cyst
  2. A unilocular cyst with a fine reticular pattern of septations
  3. Bilateral solid masses with ascites
  4. A hyperechoic nodule with acoustic shadowing within a cyst Correct answer.

Explanation

A Rokitansky nodule (dermoid plug) containing fat, hair, or teeth appears as a hyperechoic focus with shadowing. Simple anechoic cysts suggest functional cysts, and solid bilateral masses with ascites raise concern for malignancy.

Question 48Diagnostic evaluation, staging workup, and imaging

A postmenopausal woman has a complex adnexal mass with solid components, thick septations, and ascites. What is the most appropriate next step in management?

  1. Trial of combined oral contraceptives
  2. Reassurance and discharge
  3. Repeat ultrasound in 12 months
  4. Referral to gynecologic oncology for surgical staging Correct answer.

Explanation

Complex adnexal features with ascites in a postmenopausal woman carry a high risk of malignancy and warrant referral to gynecologic oncology for staging surgery. Observation or hormonal suppression is inappropriate for suspected malignancy.

Question 49Diagnostic evaluation, staging workup, and imaging

Which serum marker is most appropriate to obtain when a yolk sac tumor is suspected in a young woman?

  1. CA-125
  2. Alpha-fetoprotein Correct answer.
  3. CA 19-9
  4. CEA

Explanation

Yolk sac tumors characteristically secrete alpha-fetoprotein, making AFP the marker of choice for diagnosis and follow-up. CA-125, CA 19-9, and CEA are not the defining markers for this germ cell tumor.

Question 50Diagnostic evaluation, staging workup, and imaging

Which is the standard imaging study for staging newly diagnosed ovarian cancer to assess peritoneal spread?

  1. Pelvic radiography
  2. Hysterosalpingography
  3. Transabdominal ultrasound alone
  4. Contrast-enhanced CT of the chest, abdomen, and pelvis Correct answer.

Explanation

Contrast-enhanced CT of chest, abdomen, and pelvis is standard for evaluating peritoneal carcinomatosis, omental disease, and distant spread in ovarian cancer. Plain films and ultrasound alone cannot assess the full extent of disease.